On Wed, Dec 17, 2025 at 06:57:05AM -1000, Tejun Heo <[email protected]> wrote: > On Wed, Dec 17, 2025 at 05:27:36PM +0100, Michal Koutný wrote: > > This comment is simpler than reworking level users for possible > > ioc_gq::ancestors __counted_by annotation. > > I don't understand the change here. Can you please elaborate a bit more?
ioc_gq::ancestors includes self but ioc_gq::level doesn't count it in (level=0 is root, that's like cgroup's level, from which it's copied in ioc_pd_init()). Therefore ioc_gq::level cannot be used as size hint of the ancestors array :-/ (The comment in the original form tempted to simply use __counted_by(level). I see a comment for each member would be the clearest.) I'm open to more remarks or questions. Michal
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